LogFAQs > #956533035

I'll try, but I'm not quite sure I have enough fire power.

Mage team could be Rinoa Ice AASB for phase 1.
Phase 2+3 would be Rinoa Earth Sync, Fujin AASB, Quistis AASB. All 3 have AOSBs as potential finishers and OSBs to help break King's rage if necessary. That team easily dispatched Cerberus, but it might be lacking for Bahamut.

Alternatively, there's potential for a physical team with the BDL HAs for Ward and Raijin, with help from Kiros. They shouldn't need AASBs for phase 1, and all 3 have their AASB for phase 2+3

There's also the issue of Selphie being a bit lacking, but with Mog as backup, she should still be ok.